A breakdown of the 5.8K+ companies running MailOptin.
Top industries
Professional and business services847
Art, sports and recreation586
Education and training430
Health and wellness428
Media and telecommunications350
Information technology and services304
Hospitality and travel284
Industrial and manufacturing282
No industry recorded: 888
Company size
1–101,424 (44%)
11–50950 (29%)
51–250654 (20%)
251–500129 (4%)
501–1,00025 (1%)
1,001–5,00037 (1%)
5,001–10,0009 (<1%)
10,001+7 (<1%)
Share of companies with a recorded size, by employees.
No size recorded: 2.6K+
Versions detected
10 versions across the confirmed companies. Counts are distinct companies seen running that version.
1.2.78.14
1.2.78.34
1.2.75.22
1.2.75.42
1.2.77.32
1.2.78.42
1.2.78.52
1.2.78.62
1.2.1.11
1.2.46.11
One dataset. Four ways to sell.
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Competitor displacement
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Complementary tools
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Service partners
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Market insights
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Frequently asked questions
About the MailOptin data on this page.
How many companies use MailOptin?
Firmable holds confirmed MailOptin detections for 5,857 distinct companies, 3,970 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use MailOptin?
Bartlett Cocke General Contractors, Strategic Value Partners and Essex Solutions are among the most prominent in the current set.
What industries use MailOptin?
Professional and business services, art, sports and recreation and education and training lead the set, across 19 industries in total.
What size companies use MailOptin?
Adoption concentrates in the 1-10 employee band, across the companies whose size is recorded.
Where are MailOptin users based?
The United States, Canada, Australia and the Philippines account for most detections, across 13 countries.
How current is this data?
3,970 companies were confirmed in the last 90 days. Last detection 13 October 2026.
